package com.tanhua.dubbo.api;

import com.tanhua.model.enums.CommentType;
import com.tanhua.model.mongo.Comment;
import com.tanhua.model.mongo.Movement;
import com.tanhua.model.vo.PageResult;
import org.apache.dubbo.config.annotation.DubboService;
import org.bson.types.ObjectId;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.FindAndModifyOptions;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;

import java.util.List;

@DubboService
public class CommentApiImpl implements CommentApi {

    @Autowired
    private MongoTemplate mongoTemplate;

    //发布评论，并获取评论数量
    public Integer save(Comment comment) {
        //1、查询动态
        Movement movement = mongoTemplate.findById(comment.getPublishId(), Movement.class);
        //2、向comment对象设置被评论人属性
        if (movement != null) {
            comment.setPublishUserId(movement.getUserId());
        }
        //3、保存到数据库
        mongoTemplate.save(comment);
        //4、更新动态表中的对应字段
        Query query = Query.query(Criteria.where("id").is(comment.getPublishId()));
        Update update = new Update();
        if (comment.getCommentType() == CommentType.LIKE.getType()) {
            update.inc("likeCount", 1);
        } else if (comment.getCommentType() == CommentType.COMMENT.getType()) {
            update.inc("commentCount", 1);
        } else {
            update.inc("loveCount", 1);
        }
        //设置更新参数
        FindAndModifyOptions options = new FindAndModifyOptions();
        options.returnNew(true);//获取更新后的最新数据
        Movement modify = mongoTemplate.findAndModify(query, update, options, Movement.class);
        //5、获取最新的评论数量，并返回
        return modify.statisCount(comment.getCommentType());
    }

    //分页查询
    public List<Comment> findComments(String movementId, CommentType commentType, Integer page, Integer pagesize) {
        //1、构造查询条件
        Query query = Query.query(Criteria.where("publishId").is(new ObjectId(movementId)).and("commentType")
                        .is(commentType.getType()))
                .skip((page - 1) * pagesize)
                .limit(pagesize)
                .with(Sort.by(Sort.Order.desc("created")));
        //2、查询并返回
        return mongoTemplate.find(query, Comment.class);
    }

    //判断comment数据是否存在
    public Boolean hasComment(String movementId, Long userId, CommentType commentType) {
        Criteria criteria = Criteria.where("userId").is(userId)
                .and("publishId").is(new ObjectId(movementId))
                .and("commentType").is(commentType.getType());
        Query query = Query.query(criteria);
        return mongoTemplate.exists(query, Comment.class); //判断数据是否存在
    }

    //删除

    public Integer delete(Comment comment) {
        //1、删除Comment表数据
        Criteria criteria = Criteria.where("userId").is(comment.getUserId())
                .and("publishId").is(comment.getPublishId())
                .and("commentType").is(comment.getCommentType());
        Query query = Query.query(criteria);
        mongoTemplate.remove(query, Comment.class);
        //2、修改动态表中的总数量
        Query movementQuery = Query.query(Criteria.where("id").is(comment.getPublishId()));
        Update update = new Update();
        if (comment.getCommentType() == CommentType.LIKE.getType()) {
            update.inc("likeCount", -1);
        } else if (comment.getCommentType() == CommentType.COMMENT.getType()) {
            update.inc("commentCount", -1);
        } else {
            update.inc("loveCount", -1);
        }
        //设置更新参数
        FindAndModifyOptions options = new FindAndModifyOptions();
        options.returnNew(true);//获取更新后的最新数据
        Movement modify = mongoTemplate.findAndModify(movementQuery, update, options, Movement.class);
        //5、获取最新的评论数量，并返回
        return modify.statisCount(comment.getCommentType());
    }

    @Override
    public List<Comment> findByUserId(Integer page, Integer pagesize, Long userId, CommentType commentType) {
        Query query = new Query();
        int type = commentType.getType();
        if (type == 1) {
            // 1是点赞
            query.addCriteria(Criteria.where("publishUserId").is(userId).and("commentType").
                            is(type).and("userId").nin(userId)).
                    limit(pagesize).
                    limit((page - 1) * pagesize);
        } else if (type == 3) {
            // 3是喜欢
            query.addCriteria(Criteria.where("publishUserId").is(userId).and("commentType").
                            is(type).and("userId").nin(userId)).
                    limit(pagesize).
                    limit((page - 1) * pagesize);
        }else  if (type == 2){
            //2是评论
            query.addCriteria(Criteria.where("publishUserId").is(userId).and("commentType").is(type)).
                    limit(pagesize).limit((page - 1) * pagesize);
        }

        return mongoTemplate.find(query, Comment.class);
    }

    //评论列表升级版 -su
    @Override
    public PageResult findCommentList(Integer page, Integer pageSize, String messageID, CommentType comment) {
        Query query = Query.query(Criteria.where("publishId").is(new ObjectId(messageID)).and("commentType")
                .is(comment.getType()));
        long count = mongoTemplate.count(query, Comment.class);
        query.skip((page - 1) * pageSize)
                .limit(pageSize)
                .with(Sort.by(Sort.Order.desc("created")));
        //2、查询并返回
        List<Comment> comments = mongoTemplate.find(query, Comment.class);
        return new PageResult(page, pageSize, count, comments);
    }

    @Override
    public Integer commentLike(String id) {
        Query query = Query.query(Criteria.where("_id").is(id));
        Update update = new Update();
        update.set("likeCount", 1);
        FindAndModifyOptions options = new FindAndModifyOptions();
        options.returnNew(true);
        Comment andModify = mongoTemplate.findAndModify(query, update, options, Comment.class);
        return andModify.getLikeCount();
    }
    @Override
    public Integer dislike(String id) {
        Query query = Query.query(Criteria.where("_id").is(id));
        Update update = new Update();
        update.set("likeCount", -1);
        FindAndModifyOptions options = new FindAndModifyOptions();
        options.returnNew(true);
        Comment andModify = mongoTemplate.findAndModify(query, update, options, Comment.class);
        return andModify.getLikeCount();
    }
}
